Document and Entity Information - shares	9 Months Ended
	May 01, 2020	May 20, 2020
Cover [Abstract]
Entity Registrant Name	Cracker Barrel Old Country Store, Inc.
Entity Central Index Key	0001067294
Current Fiscal Year End Date	--08-02
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		23,693,981
Document Type	10-Q
Amendment Flag	false
Document Period End Date	May 01, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-25225
Entity Tax Identification Number	62-0812904
Entity Incorporation, State or Country Code	TN
Entity Address, Address Line One	305 Hartmann Drive
Entity Address, City or Town	Lebanon
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37087-4779
City Area Code	615
Local Phone Number	444-5533
Title of 12(b) Security	Common Stock (Par Value $0.01)
Trading Symbol	CBRL
Security Exchange Name	NASDAQ